51612366634656 has 48 divisors (see below), whose sum is σ = 137504588737824. Its totient is φ = 16947344265984.

The previous prime is 51612366634637. The next prime is 51612366634657. The reversal of 51612366634656 is 65643666321615.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 51612366634656.

It is not an unprimeable number, because it can be changed into a prime (51612366634657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4012148935 + ... + 4012161798.

It is an arithmetic number, because the mean of its divisors is an integer number (2864678932038).

Almost surely, 2^{51612366634656} is an apocalyptic number.

It is an amenable number.

51612366634656 is an abundant number, since it is smaller than the sum of its proper divisors (85892222103168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51612366634656 is a wasteful number, since it uses less digits than its factorization.

51612366634656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8024310813 (or 8024310805 counting only the distinct ones).

The product of its digits is 83980800, while the sum is 60.

The spelling of 51612366634656 in words is "fifty-one trillion, six hundred twelve billion, three hundred sixty-six million, six hundred thirty-four thousand, six hundred fifty-six".